From: Christoph Hellwig <hch@infradead.org>
To: Brian Foster <bfoster@redhat.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH] xfs: fix spurious spin_is_locked() assert failures on non-smp kernels
Date: Wed, 7 Jun 2017 04:21:40 -0700 [thread overview]
Message-ID: <20170607112140.GA28606@infradead.org> (raw)
In-Reply-To: <1496833017-63787-1-git-send-email-bfoster@redhat.com>
On Wed, Jun 07, 2017 at 06:56:57AM -0400, Brian Foster wrote:
> The 0-day kernel test robot reports assertion failures on
> !CONFIG_SMP kernels due to failed spin_is_locked() checks. As it
> turns out, spin_is_locked() is hardcoded to return zero on
> !CONFIG_SMP kernels and so this function cannot be relied on to
> verify spinlock state in this configuration.
>
> To avoid this problem, update the associated asserts to fail only
> when CONFIG_SMP is enabled in the kernel. Note that this is not
> necessary for one assert that expects a zero return from
> spin_is_locked(). Update this assert anyways for consistency and
> future proofing.
Just switch to lockdep_assert_held instead of this mess..
next prev parent reply other threads:[~2017-06-07 11:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-07 10:56 [PATCH] xfs: fix spurious spin_is_locked() assert failures on non-smp kernels Brian Foster
2017-06-07 11:21 ` Christoph Hellwig [this message]
2017-06-07 11:54 ` Brian Foster
2017-06-07 13:13 ` Christoph Hellwig
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